Abstract: Neonatal screening for phenylketonuria (PKU, OMIM: 261600) was introduced at the end of the 1960s. We developed a rapid and simple molecular test for the most frequent phenylalanine hydroxylase (PAH, Gene ID: 5053) mutations. Using this method to detect the 18 most frequent mutations, it is possible to achieve a 75% detection rate in Italian population. The variants selected also reach a high detection rate in other populations, for example, 70% in southern Germany, 68% in western Germany, 76% in Denmark, 68% in Sweden, 63% in Poland, and 60% in Bulgaria. We successfully applied this confirmation test in neonatal screening for hyperphenylalaninemias using dried blood spots and obtained the genotype in approximately 48 h. The method was found to be suitable as second tier test in neonatal screening for hyperphenylalaninemias in neonates with a positive screening test. This test can also be useful for carrier screening because it can bypass the entire coding sequence and intron–exon boundaries sequencing, thereby overcoming the questions that this approach implies, such as new variant interpretations.

Molecular analysis of PKU-associated PAH mutations: a fast and simple genotyping test / Tolve, Manuela; Artiola, Cristiana; Pasquali, Amelia; Giovanniello, Teresa; D'Amici, Sirio; Angeloni, Antonio; Pizzuti, Antonio; Carducci, Claudia; Leuzzi, Vincenzo; Carducci, Carla. - In: METHODS AND PROTOCOLS. - ISSN 2409-9279. - ELETTRONICO. - (2018), pp. 1-12. [10.3390/mps1030030]

Molecular analysis of PKU-associated PAH mutations: a fast and simple genotyping test

Manuela Tolve
Primo
;
ARTIOLA, CRISTIANA
Secondo
;
PASQUALI, Amelia;GIOVANNIELLO, TERESA;D'AMICI, SIRIO;Antonio Angeloni;PIZZUTI, Antonio;CARDUCCI, Claudia;Vincenzo Leuzzi
Penultimo
;
CARDUCCI, Carla
Ultimo
2018

Abstract

Abstract: Neonatal screening for phenylketonuria (PKU, OMIM: 261600) was introduced at the end of the 1960s. We developed a rapid and simple molecular test for the most frequent phenylalanine hydroxylase (PAH, Gene ID: 5053) mutations. Using this method to detect the 18 most frequent mutations, it is possible to achieve a 75% detection rate in Italian population. The variants selected also reach a high detection rate in other populations, for example, 70% in southern Germany, 68% in western Germany, 76% in Denmark, 68% in Sweden, 63% in Poland, and 60% in Bulgaria. We successfully applied this confirmation test in neonatal screening for hyperphenylalaninemias using dried blood spots and obtained the genotype in approximately 48 h. The method was found to be suitable as second tier test in neonatal screening for hyperphenylalaninemias in neonates with a positive screening test. This test can also be useful for carrier screening because it can bypass the entire coding sequence and intron–exon boundaries sequencing, thereby overcoming the questions that this approach implies, such as new variant interpretations.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11573/1135630
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